The FDNY responded to the scene. Vanessa Trump and two others received decontamination treatment by responding FDNY firefighters, ABC7 reported.

In a statement posted to Twitter later in the day, Donald Trump Jr. decried the act as "disturbing behavior."

Thankful that Vanessa & my children are safe and unharmed after the incredibly scary situation that occurred this morning. Truly disgusting that certain individuals choose to express their opposing views with such disturbing behavior.